osgbillboard: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/osgbillboard - from package: openscenegraph

You may install the required package with command apt-get install {package}

Error in other languages:
osgbillboard: bevel nie gevind nie
osgbillboard: comandă negăsită
osgbillboard: comando não encontrado
osgbillboard: commande introuvable
osgbillboard: command not found
osgbillboard: käsku ei ole
osgbillboard: không tìm thấy lệnh
osgbillboard: komanda nerasta
osgbillboard: Kommando nicht gefunden.
osgbillboard: kommandot finns inte
osgbillboard: komut yok
osgbillboard: nie znaleziono polecenia
osgbillboard: níor aimsíodh an t-ordú
osgbillboard: no se encontró la orden
osgbillboard: no s'ha trobat l'ordre
osgbillboard: opdracht niet gevonden
osgbillboard: parancs nem található
osgbillboard: perintah tidak ditemukan
osgbillboard: príkaz nenájdený
osgbillboard: příkaz nenalezen
osgbillboard: команда не найдена
osgbillboard: командата не е открита
osgbillboard: 命令找不到
osgbillboard: コマンドが見つかりません